Lubricating system



E. WOERNER.

LUBRlCATlNG SYSTEM. APPLICATION FILED JULY 24.1918.

Patented Feb. 8, 1921.

A TTORNE Y.

. pumps.

UNITED stares PATENT creme.

EUGEN WOERNER, OF STUTTGART, GERMANY, ASSIGNOR, BY MESNE ASSIGNMENTS,

'I'O AIMERIGAN BOSCH MAGNETO CORPORATION, OF NEW YORK, 1\T. Y., A CORPORA- TION 015 NEW YORK.'

LUBRIGATING SYSTEM.

eonora.

Specification of Letters Patent.

Patented Feb. 8, 1921.

Application filed July 2t, 1918. .Serial No. 246,617.

To all whom it may concern:

Be it known that I, Enenn Wonerrnn, a subject of the German Emperor, residing at and whose post-office address is Stutt art, Militlirstrasse 2 Germany, have invented certain new and useful Improvements in Lubricating Systems; and I do hereby declare the following to-be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates tolubricating systems and particularly to one wherein one or more pumps are actuated by a driving shaft which carries a disk operating the pistons of all the pumps and which also acts as a valve member for the cylinders of all Heretofore such systems included pumps delivering fresh oil to all the parts to be lubricated. 'Since some of the pumps sometimes delivered more oil than required, the. surplus gradually accumulated and gave rise to trouble. Forinstancain internal combustion engines,the surplus oil collected in the crank case, so that, due to the burning of the oil, the engine commenced to smoke. Not only is the burnt oil wasted, but the fresh oil delivered by the pump was spoiled upon mixing with it. r

The lubricating systems'herein disclosed remove this trouble by so providing oil ducts in the driving shaft and in the pump casing, that at least one of the pumps draws off the surplus used oil, and delivers it to a part to be lubricated, or to a filter, or to a reservoir, either without mixture with fresh oil or after mixture with fresh oil in the pump cylinder or in a delivery pipe.

In the accompanying drawings illustrating the invention, Figure l is a central vertical section of a multiple pump used in the lubricating systems, showing one of the pistons in its suction stroke; Fig. 2 is a similar view showing the same pump in its delivery stroke; and Figs. 3 to 7 are diagraminz-iti representations of lubricating systems arranged in various ways in accordance with the invention.

The multiple pump has a stationary casing a containing a series of pumps arranged in a circle around the driving shaft Z2, which has a worm gear 0 fast to one end and a cam disk (Z fixed to the other end for reciprocating the pistons of all the pumps.

The casing has for each pump a suction duct, as f, leading to the central bore receiving the shaft Z). This shaft has a duct 5/ with suitably arranged terminal portions g, and g. and for each pump there is a duct h leading to the upper part of the cylinder of the pump 2', so that as the shaft Z2 rotates, communication is established between the source of oil supply connected to 7 and the pump cylinder as the pump piston is pulled downwardly in its suction stroke by the cam disk (Z, as indicatedloy the arrows in Fig. 1. .Vhen the pump piston is moved upwardly in its delivery stroke, the oil is forced out of the top of the cylinder throughthe duct h and the duct 76 of the shaft, and thence through duct It, and across the reduced portion of the piston into the ducts Z Z and l, and thence through a delivery pipe to the desiredplace, as indicated by the arrows in Fig. 2.

According to the form given to the cam disk (Z, the piston of each pump may be reciprocated one or more times as desired in each rotation of the shaft 5, so that by suitably arranging the ducts in the casings and the shaft 6, the rate atwhich oil is delivered by the pump and the source from which it isdrawn in each suction stroke, and the pipe to which it is delivered in each delivery stroke. may be predetermined.

In Fig. 3, the cam disk (Z has one rise and one fall so that each pump 18 reciprocated up and down once in each rotation of the shaft 6. In the suction stroke of pump i fresh oil is taken from the source 0 through the suction pipe 0 and the suction ducts c, 9 g, and it into the cylinder, while the pump 2' delivers oil to the lower branch of the delivery pipe m by way ofthe ducts 71. 7.. and Z as illustrated at the left-handside of the figure. Later on in the movement of the shaft 5, as shown atthe right-hand side of the figure, the pump i which was previously in its suction stroke, delivers the fresh oil by way of the ducts h, is, and Z into the upper branch of pipe 771, while the other pump 2', which was previously in its delivery stroke, sucks used oil from the source a through the pipe 71 ducts f, 9

g, g, and 72 The fresh oil delivered by the pump 2', and the used oil delivered by the pump z'miX after the junction of the two branches of pipe m, flowing in admixture to any desired place.

In the arrangement of Fig. i, the cam disk (I has one rise and one fall as before. In the suction stroke of the pump 2',, clean oil is taken from the source 0 through the pipe 0 and ducts 9,, g, g, and h, at the same time that oil is nelivered by the pump 5 through the ducts 7c and Z into the filter 79 connected to the source 0. When the duct 9 registers with f, as shown in the right-hand part of the figure, fresh oil is taken by the pump 2' from the source of used oil a by way of pipe 92,, ducts f, 9 g, g, and it, while the pump 2', is delivering clean oil, taken areviouslyfrom the source 0, tirough the ducts 72,2, 70, and Z and thence by way of pipe 112 to any suitable place.

In the arrangement of Fig. 5, the cam disk has two rising portions followed by a single falling portion'so that the suction stroke of each piston is divided into two intermittent parts while the delivery stroke is continuous. Thus the pump 2' first draws fresh oil from the source 0 through the pipe 0 ducts e, 9,, g, g, and 71, and in the following part of its suction stroke, shown at the right-hand side, draws used oil from the source a through.- the pipe n ducts 7, 9 g, 9 and h. In the continuous delivery stroke of that pump, the mixed oil from the two sources is discharged through the duct is into the delivery pipe, as shown at the upper right-hand part of the second portion of this figure. 7

In the arrangement of Fig. 6, the cam disk d has two rising portions alternating with two falling portions so that each piston is reciprocated twice during each rotation of the shaft 6. In the position shown at the left of the first portion of the figure, fresh'oil is taken from the source 0 by way of the pipe 0 ducts c, 5/ g, 9 and 7a, and

in the succeeding delivery stroke is dis? ichargedby way of the ducts it, It and Z, to

the pipe m. In the second suction stroke of the pump 2', as. shown 'at the right of the figure, the duct g, registers with f, so that used oil is then drawn from the source a through pipe 11 ducts f, g g, g, and'iz, while on thesucceeding delivery stroke, as shown at the' upper right-hand part of that portion of the figure, that oil is forced through the ducts h, is, and Z intothe pipe m. Thus fresh and used oil are delivered alternately by the pump 2'- into a common discharge pipe, wherein those oils mi); in flowing to any 'desired place.

In thearrangement of Fig. 7, the cam disk (Z hastwo rises and two falls as before.

Whenthe duct g, registers with the duct 6,

figure, fresh oil is taken from the source 0 7 through the pipe 0 ducts e, 9 'g, g, and h,

and in the following delivery stroke that pump discharges the oil through the duct .1: into the pipe m leading to any suitable place. When the duct 9 registers with the duct f, as shown on the righthand side of the figure, the same pump 11 takes used oil from the source a through the pipe a ducts f, g, g, and h, and in the following delivery stroke, delivers that oil through the ducts 0', and Z, to the pipe n leading to the source 0.

The number of individual pumps or groups of individual pumps used in the arrangements shown above is optional, so that by providing ducts and ports of suitable shape and arrangement, agreat variety of modifications, within the scope of the invention, is possible.

Having thus described my invention, what I claim is 1. In a lubricating system, the combina tion of a pump, a casing having ducts including inlet and outlet ducts, means for containing fresh oil, means for containing used oil, said inlet ducts being in communication with said means, a shaft rotatably mounted in said casing, said shaft having ducts adapted to register with the ducts in said casing, and a cam disk onsaid shaft for operating said pump, said shaft rotatable to control communication between said inlet ductsand said pump, whereby said pump draws in used and fresh oil from said oil containing means and delivers said oils to said outlet ducts, said outlet ducts being in communication with said pump.

2. In a lubricating system, the combination of a multiple pump having two in dividual pumps and a casing having ducts including inlet and outlet ducts, means for containing fresh oil, means for containing used oil, said inlet ducts being in communication with said means, a shaft rotatably mounted in said casing, said shaft having ducts adapted to register with the ducts in said casing, and a cam disk fast on said shaft for operating both of said pumps, said shaft rotatable to control communication between said inlet ducts and said pumps whereby said pumps alternately draw in used and fresh oil from said oil containing means and deliver said oils to said outlet ducts, said outlet ducts being in communication with said pumps.

3. In a lubricating system, the combination of a multiple pump having two inclividual pumps, a casing having ducts including inlet and outlet ducts, means for containing fresh oil, means for containing used oil, said inlet ducts being in communication with said means, a shaft rotatably mounted in said casing, said shaft having ducts adapted to register with the ducts in said casing, a cam disk fast on said shaft for operating both of said pumps, said shaft rotatable to control communication between said inlet ducts and said pumps whereby said pumps alternately draw in used and fresh oil from said oil containing means and deliver said oils to said outlet ducts, said outlet ducts being in communication with said pumps, a delivery pipe connecting the outlet duct of one of said pumps to said fresh oil means, and a delivery pipe connecting the outlet duct of the other of said pumps to the machine to be lubricated.

4. In a pump, the combination of a casing, said casing having a piston chamber, a reciprocable piston in said chamber, a

rotatable member in said casing, said cas ing having ducts including inlet and outlet ducts, said rotatable member having ducts adapted to register with the ducts in said casing for controlling communication between said inlet ducts and said chamber and a cam on said rotatable member adapted to reciprocate said piston, said outlet ducts communicating with said chamber.

In testimony whereof I afiix my signature, in presence of two witnesses.

EUGEN WOERNER.

Witnesses PAUL WoLFARr, Anon LEBI-IERZ. 

